}
#endif
-static ssize_t handle_aiocb_ioctl(RawPosixAIOData *aiocb)
+#if defined(__linux__)
+static int handle_aiocb_ioctl(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
int ret;
ret = ioctl(aiocb->aio_fildes, aiocb->ioctl.cmd, aiocb->ioctl.buf);
return 0;
}
+#endif /* linux */
-static ssize_t handle_aiocb_flush(RawPosixAIOData *aiocb)
+static int handle_aiocb_flush(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
BDRVRawState *s = aiocb->bs->opaque;
int ret;
return offset;
}
-static ssize_t handle_aiocb_rw(RawPosixAIOData *aiocb)
+static int handle_aiocb_rw(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
ssize_t nbytes;
char *buf;
* we can just use plain pread/pwrite without any problems.
*/
if (aiocb->io.niov == 1) {
- return handle_aiocb_rw_linear(aiocb, aiocb->io.iov->iov_base);
+ nbytes = handle_aiocb_rw_linear(aiocb, aiocb->io.iov->iov_base);
+ goto out;
}
/*
* We have more than one iovec, and all are properly aligned.
nbytes = handle_aiocb_rw_vector(aiocb);
if (nbytes == aiocb->aio_nbytes ||
(nbytes < 0 && nbytes != -ENOSYS)) {
- return nbytes;
+ goto out;
}
preadv_present = false;
}
*/
buf = qemu_try_blockalign(aiocb->bs, aiocb->aio_nbytes);
if (buf == NULL) {
- return -ENOMEM;
+ nbytes = -ENOMEM;
+ goto out;
}
if (aiocb->aio_type & QEMU_AIO_WRITE) {
}
qemu_vfree(buf);
- return nbytes;
+out:
+ if (nbytes == aiocb->aio_nbytes) {
+ return 0;
+ } else if (nbytes >= 0 && nbytes < aiocb->aio_nbytes) {
+ if (aiocb->aio_type & QEMU_AIO_WRITE) {
+ return -EINVAL;
+ } else {
+ iov_memset(aiocb->io.iov, aiocb->io.niov, nbytes,
+ 0, aiocb->aio_nbytes - nbytes);
+ return 0;
+ }
+ } else {
+ assert(nbytes < 0);
+ return nbytes;
+ }
}
#ifdef CONFIG_XFS
return ret;
}
-static ssize_t handle_aiocb_write_zeroes(RawPosixAIOData *aiocb)
+static int handle_aiocb_write_zeroes(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
#if defined(CONFIG_FALLOCATE) || defined(CONFIG_XFS)
BDRVRawState *s = aiocb->bs->opaque;
#endif
return -ENOTSUP;
}
-static ssize_t handle_aiocb_write_zeroes_unmap(RawPosixAIOData *aiocb)
+static int handle_aiocb_write_zeroes_unmap(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
BDRVRawState *s G_GNUC_UNUSED = aiocb->bs->opaque;
int ret;
}
#endif
-static ssize_t handle_aiocb_copy_range(RawPosixAIOData *aiocb)
+static int handle_aiocb_copy_range(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
uint64_t bytes = aiocb->aio_nbytes;
off_t in_off = aiocb->aio_offset;
off_t out_off = aiocb->copy_range.aio_offset2;
return 0;
}
-static ssize_t handle_aiocb_discard(RawPosixAIOData *aiocb)
+static int handle_aiocb_discard(void *opaque)
{
+ RawPosixAIOData *aiocb = opaque;
int ret = -EOPNOTSUPP;
BDRVRawState *s = aiocb->bs->opaque;
return result;
}
-static int aio_worker(void *arg)
-{
- RawPosixAIOData *aiocb = arg;
- ssize_t ret = 0;
-
- switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) {
- case QEMU_AIO_READ:
- ret = handle_aiocb_rw(aiocb);
- if (ret >= 0 && ret < aiocb->aio_nbytes) {
- iov_memset(aiocb->io.iov, aiocb->io.niov, ret,
- 0, aiocb->aio_nbytes - ret);
-
- ret = aiocb->aio_nbytes;
- }
- if (ret == aiocb->aio_nbytes) {
- ret = 0;
- } else if (ret >= 0 && ret < aiocb->aio_nbytes) {
- ret = -EINVAL;
- }
- break;
- case QEMU_AIO_WRITE:
- ret = handle_aiocb_rw(aiocb);
- if (ret == aiocb->aio_nbytes) {
- ret = 0;
- } else if (ret >= 0 && ret < aiocb->aio_nbytes) {
- ret = -EINVAL;
- }
- break;
- case QEMU_AIO_FLUSH:
- ret = handle_aiocb_flush(aiocb);
- break;
- case QEMU_AIO_IOCTL:
- ret = handle_aiocb_ioctl(aiocb);
- break;
- case QEMU_AIO_DISCARD:
- ret = handle_aiocb_discard(aiocb);
- break;
- case QEMU_AIO_WRITE_ZEROES:
- ret = handle_aiocb_write_zeroes(aiocb);
- break;
- case QEMU_AIO_WRITE_ZEROES | QEMU_AIO_DISCARD:
- ret = handle_aiocb_write_zeroes_unmap(aiocb);
- break;
- case QEMU_AIO_COPY_RANGE:
- ret = handle_aiocb_copy_range(aiocb);
- break;
- case QEMU_AIO_TRUNCATE:
- g_assert_not_reached();
- default:
- error_report("invalid aio request (0x%x)", aiocb->aio_type);
- ret = -EINVAL;
- break;
- }
-
- g_free(aiocb);
- return ret;
-}
-
static int coroutine_fn raw_thread_pool_submit(BlockDriverState *bs,
ThreadPoolFunc func, void *arg)
{
return thread_pool_submit_co(pool, func, arg);
}
-static int paio_submit_co_full(BlockDriverState *bs, int fd,
- int64_t offset, int fd2, int64_t offset2,
- QEMUIOVector *qiov,
- int bytes, int type)
-{
- RawPosixAIOData *acb = g_new(RawPosixAIOData, 1);
-
- acb->bs = bs;
- acb->aio_type = type;
- acb->aio_fildes = fd;
-
- acb->aio_nbytes = bytes;
- acb->aio_offset = offset;
-
- if (qiov) {
- acb->io.iov = qiov->iov;
- acb->io.niov = qiov->niov;
- assert(qiov->size == bytes);
- } else {
- acb->copy_range.aio_fd2 = fd2;
- acb->copy_range.aio_offset2 = offset2;
- }
-
- trace_file_paio_submit_co(offset, bytes, type);
- return raw_thread_pool_submit(bs, aio_worker, acb);
-}
-
-static inline int paio_submit_co(BlockDriverState *bs, int fd,
- int64_t offset, QEMUIOVector *qiov,
- int bytes, int type)
-{
- return paio_submit_co_full(bs, fd, offset, -1, 0, qiov, bytes, type);
-}
-
static int coroutine_fn raw_co_prw(BlockDriverState *bs, uint64_t offset,
uint64_t bytes, QEMUIOVector *qiov, int type)
{
BDRVRawState *s = bs->opaque;
+ RawPosixAIOData acb;
if (fd_open(bs) < 0)
return -EIO;
}
}
- return paio_submit_co(bs, s->fd, offset, qiov, bytes, type);
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_fildes = s->fd,
+ .aio_type = type,
+ .aio_offset = offset,
+ .aio_nbytes = bytes,
+ .io = {
+ .iov = qiov->iov,
+ .niov = qiov->niov,
+ },
+ };
+
+ assert(qiov->size == bytes);
+ return raw_thread_pool_submit(bs, handle_aiocb_rw, &acb);
}
static int coroutine_fn raw_co_preadv(BlockDriverState *bs, uint64_t offset,
static int raw_co_flush_to_disk(BlockDriverState *bs)
{
BDRVRawState *s = bs->opaque;
+ RawPosixAIOData acb;
int ret;
ret = fd_open(bs);
return ret;
}
- return paio_submit_co(bs, s->fd, 0, NULL, 0, QEMU_AIO_FLUSH);
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_fildes = s->fd,
+ .aio_type = QEMU_AIO_FLUSH,
+ };
+
+ return raw_thread_pool_submit(bs, handle_aiocb_flush, &acb);
}
static void raw_aio_attach_aio_context(BlockDriverState *bs,
#endif
if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
#ifdef DIOCGMEDIASIZE
- if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
+ if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
#elif defined(DIOCGPART)
{
struct partinfo pi;
}
static coroutine_fn int
-raw_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes)
+raw_do_pdiscard(BlockDriverState *bs, int64_t offset, int bytes, bool blkdev)
{
BDRVRawState *s = bs->opaque;
+ RawPosixAIOData acb;
+
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_fildes = s->fd,
+ .aio_type = QEMU_AIO_DISCARD,
+ .aio_offset = offset,
+ .aio_nbytes = bytes,
+ };
- return paio_submit_co(bs, s->fd, offset, NULL, bytes, QEMU_AIO_DISCARD);
+ if (blkdev) {
+ acb.aio_type |= QEMU_AIO_BLKDEV;
+ }
+
+ return raw_thread_pool_submit(bs, handle_aiocb_discard, &acb);
}
-static int coroutine_fn raw_co_pwrite_zeroes(
- BlockDriverState *bs, int64_t offset,
- int bytes, BdrvRequestFlags flags)
+static coroutine_fn int
+raw_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes)
+{
+ return raw_do_pdiscard(bs, offset, bytes, false);
+}
+
+static int coroutine_fn
+raw_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes,
+ BdrvRequestFlags flags, bool blkdev)
{
BDRVRawState *s = bs->opaque;
- int operation = QEMU_AIO_WRITE_ZEROES;
+ RawPosixAIOData acb;
+ ThreadPoolFunc *handler;
+
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_fildes = s->fd,
+ .aio_type = QEMU_AIO_WRITE_ZEROES,
+ .aio_offset = offset,
+ .aio_nbytes = bytes,
+ };
+
+ if (blkdev) {
+ acb.aio_type |= QEMU_AIO_BLKDEV;
+ }
if (flags & BDRV_REQ_MAY_UNMAP) {
- operation |= QEMU_AIO_DISCARD;
+ acb.aio_type |= QEMU_AIO_DISCARD;
+ handler = handle_aiocb_write_zeroes_unmap;
+ } else {
+ handler = handle_aiocb_write_zeroes;
}
- return paio_submit_co(bs, s->fd, offset, NULL, bytes, operation);
+ return raw_thread_pool_submit(bs, handler, &acb);
+}
+
+static int coroutine_fn raw_co_pwrite_zeroes(
+ BlockDriverState *bs, int64_t offset,
+ int bytes, BdrvRequestFlags flags)
+{
+ return raw_do_pwrite_zeroes(bs, offset, bytes, flags, false);
}
static int raw_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
BdrvRequestFlags read_flags,
BdrvRequestFlags write_flags)
{
+ RawPosixAIOData acb;
BDRVRawState *s = bs->opaque;
BDRVRawState *src_s;
if (fd_open(src->bs) < 0 || fd_open(dst->bs) < 0) {
return -EIO;
}
- return paio_submit_co_full(bs, src_s->fd, src_offset, s->fd, dst_offset,
- NULL, bytes, QEMU_AIO_COPY_RANGE);
+
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_type = QEMU_AIO_COPY_RANGE,
+ .aio_fildes = src_s->fd,
+ .aio_offset = src_offset,
+ .aio_nbytes = bytes,
+ .copy_range = {
+ .aio_fd2 = s->fd,
+ .aio_offset2 = dst_offset,
+ },
+ };
+
+ return raw_thread_pool_submit(bs, handle_aiocb_copy_range, &acb);
}
BlockDriver bdrv_file = {
}
#if defined(__linux__)
-
-static BlockAIOCB *hdev_aio_ioctl(BlockDriverState *bs,
- unsigned long int req, void *buf,
- BlockCompletionFunc *cb, void *opaque)
+static int coroutine_fn
+hdev_co_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
{
BDRVRawState *s = bs->opaque;
- RawPosixAIOData *acb;
- ThreadPool *pool;
+ RawPosixAIOData acb;
+ int ret;
- if (fd_open(bs) < 0)
- return NULL;
+ ret = fd_open(bs);
+ if (ret < 0) {
+ return ret;
+ }
if (req == SG_IO && s->pr_mgr) {
struct sg_io_hdr *io_hdr = buf;
if (io_hdr->cmdp[0] == PERSISTENT_RESERVE_OUT ||
io_hdr->cmdp[0] == PERSISTENT_RESERVE_IN) {
return pr_manager_execute(s->pr_mgr, bdrv_get_aio_context(bs),
- s->fd, io_hdr, cb, opaque);
+ s->fd, io_hdr);
}
}
- acb = g_new(RawPosixAIOData, 1);
- acb->bs = bs;
- acb->aio_type = QEMU_AIO_IOCTL;
- acb->aio_fildes = s->fd;
- acb->aio_offset = 0;
- acb->ioctl.buf = buf;
- acb->ioctl.cmd = req;
- pool = aio_get_thread_pool(bdrv_get_aio_context(bs));
- return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque);
+ acb = (RawPosixAIOData) {
+ .bs = bs,
+ .aio_type = QEMU_AIO_IOCTL,
+ .aio_fildes = s->fd,
+ .aio_offset = 0,
+ .ioctl = {
+ .buf = buf,
+ .cmd = req,
+ },
+ };
+
+ return raw_thread_pool_submit(bs, handle_aiocb_ioctl, &acb);
}
#endif /* linux */
static coroutine_fn int
hdev_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes)
{
- BDRVRawState *s = bs->opaque;
int ret;
ret = fd_open(bs);
if (ret < 0) {
return ret;
}
- return paio_submit_co(bs, s->fd, offset, NULL, bytes,
- QEMU_AIO_DISCARD | QEMU_AIO_BLKDEV);
+ return raw_do_pdiscard(bs, offset, bytes, true);
}
static coroutine_fn int hdev_co_pwrite_zeroes(BlockDriverState *bs,
int64_t offset, int bytes, BdrvRequestFlags flags)
{
- BDRVRawState *s = bs->opaque;
- int operation = QEMU_AIO_WRITE_ZEROES | QEMU_AIO_BLKDEV;
int rc;
rc = fd_open(bs);
return rc;
}
- if (flags & BDRV_REQ_MAY_UNMAP) {
- operation |= QEMU_AIO_DISCARD;
- }
-
- return paio_submit_co(bs, s->fd, offset, NULL, bytes, operation);
+ return raw_do_pwrite_zeroes(bs, offset, bytes, flags, true);
}
static int coroutine_fn hdev_co_create_opts(const char *filename, QemuOpts *opts,
/* generic scsi device */
#ifdef __linux__
- .bdrv_aio_ioctl = hdev_aio_ioctl,
+ .bdrv_co_ioctl = hdev_co_ioctl,
#endif
};
.bdrv_lock_medium = cdrom_lock_medium,
/* generic scsi device */
- .bdrv_aio_ioctl = hdev_aio_ioctl,
+ .bdrv_co_ioctl = hdev_co_ioctl,
};
#endif /* __linux__ */
projects / qemu.git / blobdiff